head to head · open source
Bruno vs emissary
Bruno has 47,022 GitHub stars, 2,888 forks, 1,831 open issues and last shipped yesterday. emissary has 4,523 stars, 708 forks, 442 open issues and last shipped yesterday. Bruno leads on adoption by 940% (47,022 vs 4,523 stars). Bruno is written in JavaScript under MIT; emissary is written in Python under Apache-2.0. Bruno has attracted 6% as many forks as stars, emissary 16%. emissary was the more recently maintained of the two, and both are self-hostable with no licence fee.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
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Side by side
| Bruno | emissary | |
|---|---|---|
| GitHub stars | ★ 47K | ★ 4.5K |
| License | MIT | Apache-2.0 |
| Written in | JavaScript | Python |
| Last push | 2026-09-17 | 2026-09-17 |
| Forks | ⑂ 2.9K | ⑂ 708 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Bruno if
- You weight community size — 47K stars and counting
- You want the MIT license terms
- Your stack matches JavaScript
- You value the larger contributor base for long-term maintenance
pick emissary if
- You want the emissary feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches Python
- You evaluated both and emissary fits your workflow better
About Bruno
Bruno is a lightweight, open source API client and IDE for exploring and testing APIs, built for developers and teams who want their request collections stored as plain text in a folder on their own filesystem rather than in a vendor's cloud.
read the full Bruno overview →
About emissary
Emissary ingress is an open source Kubernetes native API gateway, Layer 7 load balancer, and Kubernetes Ingress built on the Envoy Proxy. The project is written in Python, distributed under the Apache 2.0 license, and is a CNCF incubation project formerly known as Ambassador API Gateway. It lives in the cloud native ecosystem and targets microservice platforms that already use Kubernetes for scaling and resiliency.
read the full emissary overview →
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Frequently asked questions
Is Bruno or emissary more popular?
Bruno has 47,022 GitHub stars and emissary has 4,523. Bruno has the larger community by that measure.
Are Bruno and emissary free?
Both are open source. Bruno is licensed under MIT and emissary under Apache-2.0. Neither carries a licence fee.
What is the difference between Bruno and emissary?
Bruno is written in JavaScript and emissary in Python. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, Bruno or emissary?
Choose Bruno if you want the larger community (47,022 stars) or its MIT licence terms. Choose emissary if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.